The less expensive Canon EF 24-105mm f/3.5-5.6 IS STM doesn't feel as sturdy, and it doesn't capture as much light when zoomed, but it delivers crisper results throughout its zoom range. For the
Maximum Diameter x Length (mm) 83.4 x 104. Weight (g) 525. The Canon EF24-105mm f/3.5-5.6 IS STM delivers a high level of image quality approaching that offered by the EF24-105mm f/4L IS USM (released in September 2005), an L (luxury)-series standard-zoom lens that targets professional users seeking the highest levels of performance.Has full-time manual focus. Canon EF-S 18-135mm F/3.5-5.6 IS. Canon EF-S 18-55mm F/3.5-5.6 IS STM. With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode.